The CaÃÂin is a right tributary of the river Râul Negru in Romania. It discharges into the Râul Negru in Catalina. It flows through the villages and towns PlÃÂieÃÂii de Sus, PlÃÂieÃÂii de Jos, Iacobeni, Valea SeacÃÂ, Sânzieni, Târgu Secuiesc and Catalina. Its length is and its basin size is .
The following rivers are tributaries to the river CaÃÂin (from source to mouth):